Jan. 29, 2014
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by Korina Lopez, USA TODAY

by Korina Lopez, USA TODAY

Katy Perry's career is at a full gallop, with Dark Horse feat. Juicy J overtaking Pitbull's Timber feat. Ke$ha on the Billboard Hot 100 chart for the No. 1 spot with 294,000 downloads, up 12%, according to Nielsen SoundScan.

Her Grammy performance of the song certainly helped. This win makes Perry's ninth No. 1 song and the second off her album Prism. This is Juicy J's first Hot 100 No. 1.

"This No. 1 is the most unexpected one I've ever had," Perry tells Billboard exclusively. "Dark Horse has been a dark horse of a song, since August when the KatyCats voted to release it early on iTunes, before PRISM even came out. I'm so thrilled and grateful to have these moments."